Abstract: A coil assembly for vehicle braking includes a hollow bobbin configured to allow a coil to be wound along an outer circumferential surface thereof, and having at least one engagement protrusion formed on an upper surface and/or a lower surface, a plurality of lead pins coupled with the bobbin to supply current to the coil, a plurality of pin assembly units formed on two side ends of the bobbin to fix the lead pins and connect the lead pins to the coil and a hollow case configured to surround at least a portion of the bobbin, and formed to be bent in the upper and lower portions in a first direction to be attached to the upper and lower surfaces of the bobbin.

Abstract: A relay with two current paths thermally connected in parallel is particularly fail-safe. In case of a failure of one main contact, the additional load current is led via the remaining functioning main contact. The failed main contact as well as the thermal connection between the two main contacts then serve as heat sinks, whereby the relay can continue to operate.

Abstract: An adjustable solenoid assembly with an adjustable threaded pole having an interference fit section to be used with a complementary threaded receiver (e.g., the bore of the top plate) with an interference fit section. The adjustable threaded sections are used to pull or push the interference fit sections together and allow for precise locating of the interference fit sections and adjustment. The threaded pole may be used to set and maintain a precision working air gap between the pole piece and the plunger of the electromagnetic solenoid assembly. The interference fit holds the pole piece into location while still allowing the solenoid to be adjustable without a loss in flux density.

Abstract: The linear bearing (3) comprises a plurality of concentrically arranged springs (2), each spring (2) being designed as a plate spring with a fixing part (2a) and a bore (2c) arranged in the center (Z). Each spring (2) also has a spring arm (2b) which emerges from the fixing part (2a) and ends in an end section (2g). The end section (2g) has the bore (2c), and the bore (2c) is concentric to the fixing part (2a). Each spring (2) has a direction of movement (B) which runs perpendicular to the fixing part (2a), and the springs (2) are arranged one behind the other in the direction of movement (B). The spring arm (2b) has a spring arm section (2ba) which runs concentrically with the bore (2c) and which extends along an angular range (?) between 100° and 270°, preferably along an angular range (?) between 180° and 300°.

Abstract: An object of the invention is to provide a contact switching device that produces minimal hitting sound at the time of return. In the contact switching device, a movable iron core (42) provided at one end portion of a movable shaft (45) is attracted to a fixed iron core (38), based on excitation and degauss of an electromagnet portion (50), by which the movable shaft (45) reciprocates in a shaft center direction, and a movable contact (48a) of a movable contact piece (48) arranged at another end portion of the movable shaft (45) contacts and departs from a fixed contact (33a). Particularly, at the time of return, an annular flange portion (45a) provided at an intermediate portion of the movable shaft (45) abuts on an annular receiving portion (35c) of the magnet holder (35) to thereby restrict a position of the movable iron core (42).

Abstract: The invention refers to a solenoid, comprising a casing. The casing houses a coil body. The coil body supports windings of electrically conducting wire. The coil body surrounds an armature housing containing an armature. The casing wall of the casing has a recess in the area of the armature housing. Between the coil body and the armature housing a tube separated from the casing is arranged. The tube is joined to the inside of the casing wall facing the coil body without roundings.

Abstract: An electromagnet, in particular a switching magnet, has a field winding (11) located on a coil former (7), and has a pole piece (23) forming a part of the magnetic return path. A pole core (17) and an axially movable magnetic piston (19) are provided within the coil former (7). The pole piece (23) forms an aperture opening (25) for the magnet piston (19) on the area opposite the pole core (17). The magnet piston (19) is borne for its movement in its guide in the pole core (17). The pole piece (23) has a flange part (27) at least partially engaged over the coil former (7) at its axial end, and has a bush part (29) which extends axially from it. Within the coil former (7), the pole piece forms a hollow cylinder engaged over a longitudinal section of the magnet piston (19). Between the inner wall of the hollow cylinder and the circumference of the magnet piston (19), a parasitic air gap (30) is formed.

Abstract: A valve assembly, which houses a valve closing member that co-operates with an armature to connect or separate pressure medium channels in a valve housing, the member being directed towards a valve seat which is situated on a valve seat body fixed in the valve housing. The valve assembly includes a solenoid for actuating the armature which is pushed onto a non-magnetisable sleeve section of the valve housing and a magnetic core that is diametrically opposed to the armature in the valve housing. Various valve functions can be achieved by using identical valve components in a modular manner.

Abstract: The invention provides a valve comprising a tube for guiding movement of a plunger, a solenoid which can be arranged about the tube, and a yoke which can be positioned in an operational position relative to the tube and relative to the solenoid so that it provides a magnetic path between the solenoid and portions of the tube. The yoke engages the tube and thereby prevents removal of the solenoid from tube. The invention thereby provides a very simple valve design with a low amount of components. The invention further provides a method of making a valve including fixing a solenoid to a tube by use of a yoke which engages the tube.

Abstract: A solenoid, in particular for media-controlling valves, includes in an armature space an armature movably acting on a tappet, and a coil carrying windings of a conductor. The magnetic core delimiting the armature space has a tappet boring that incorporates the axially moving tappet, and a boundary element, that consists of at least partly elastic material and is media- and liquid-proof, is provided between the tappet and the magnetic core. The boundary element includes a fastening area for a sealing connection of the boundary element with the tappet, a connection area for a sealing connection of the boundary element with the magnetic core, and an intermediate part provided between the fastening area and the connection area. The intermediate part surrounds at least part of the length of the tappet like a hose or sleeve.

Abstract: The present invention relates to an electromagnetic contactor including a stationary armature which includes a housing enclosure for a coil for generating a magnetic field, the enclosure having an opening, a closing cover for the opening of the enclosure, the closing cover having an aperture, and a movable armature passing through the aperture of the closing cover for the opening of the enclosure, further including a guide ring made from non-magnetic material which is arranged in the aperture of the closing cover so as to have, between a first wall in contact with the wall of the aperture of the cover and a second wall facing towards the movable armature, a thickness corresponding to the minimal radial gap between the movable armature and the stationary armature.

Abstract: A proportional magnet for a hydraulic directional control valve and a method for the production thereof. The proportional magnet has a coil unit, a bearing unit and a pole disk. The coil unit has a cylindrical coil, a cylindrical magnet casing surrounding the coil, an annular yoke disc arranged at a face of the magnet casing and a housing. The bearing unit has a yoke with a first bearing point, a pole core with a second bearing point, and an armature unit with a magnet armature and a pressure pin. The bearing points and armature unit are aligned coaxially by a centering sleeve. When mounting the proportional magnet, the bearing unit is inserted into a cylindrical opening of the coil unit and the pole disc is put on the coil unit after the bearing unit is inserted for axially fixating the bearing unit and closing the magnetic circuit.

Abstract: A solenoid, in particular for media-controlling valves, includes in an armature space an armature movably acting on a tappet, and a coil carrying windings of a conductor. The magnetic core delimiting the armature space has a tappet boring that incorporates the axially moving tappet, and a boundary element, that consists of at least partly elastic material and is media- and liquid-proof, is provided between the tappet and the magnetic core. The boundary element includes a fastening area for a sealing connection of the boundary element with the tappet, a connection area for a sealing connection of the boundary element with the magnetic core, and an intermediate part provided between the fastening area and the connection area. The intermediate part surrounds at least part of the length of the tappet like a hose or sleeve.

Abstract: An electromagnetic actuating unit for a hydraulic directional control valve and a method for the assembly thereof. The actuating unit has a coil for generating a magnetic field, a yoke unit with a yoke and a yoke plate, and a pole core unit with a pole core and a housing for conducting a magnetic flux, and an armature unit which is arranged in the magnetic field of the coil and has an armature and a pressure pin as an actuator. The armature unit can be displaced in the direction of the longitudinal axis thereof in a first bearing point in the yoke unit and in a second bearing point in the pole core unit. At least one of the hearing points can be displaced in the radial direction during assembly of the actuating unit and can be fixed after a coaxial orientation of both bearing points.

Abstract: A flat electromagnetic actuator includes a solenoid, a shaft at the center thereof, first and second bearings, a projecting supporting part, a movable core having an annular projection, a cylindrical yoke, a coil bobbin, a coil and a cylindrical housing whose top is closed, wherein an axial dimension thereof is shorter than a radial dimension thereof, and wherein the second bearing, the projecting supporting part, the movable core, the annular projection, the cylindrical yoke, the coil bobbin, and the housing are disposed on a same surface perpendicular to a displacement direction of the shaft, and continuously provided in the radial direction.

Abstract: A linear solenoid has a first magnetic pulling portion for attracting a forward end of a plunger in a forward direction. The linear solenoid further has a second magnetic pulling portion at a rear end of the solenoid. A magnetic path portion is formed at the rear end of the solenoid and composed of a constant overlapping area and a temporal overlapping area. A plunger side-gap portion is formed at a rear end of the plunger so as to face to the overlapping areas in a radial direction. A first radial gap, which is formed between the constant overlapping area and the plunger side-gap portion, is made larger than a second radial gap, which is formed between the temporal overlapping area and the plunger side-gap portion.

Abstract: An electromechanical switching device, especially a contactor or a multifunctional device including a contactor, includes at least one stationary contact piece, at least one movable contact piece movable to and from the at least one stationary contact piece for opening or closing a current path and an electromagnetic drive unit including a yoke and a coil and a movable armature. In at least one embodiment, the electromagnetic drive unit is adapted to displace the movable contact piece in response to a voltage applied to the coil. The at least one movable contact piece and the at least one stationary contact piece are adapted to limit movement of the armature after activation of the electromagnetic drive unit.

Abstract: This is a magnetic actuator including a mobile magnetic portion (20), a fixed magnetic portion (10) provided with at least two attraction areas (11, 12) for the mobile magnetic portion (20), and means (30) for triggering the displacement of the mobile magnetic portion (20), the mobile magnetic portion (20) being in levitation when it is not in contact with an attraction area (11, 12). The mobile magnetic portion (20) includes a magnet-based part (200) with reduced magnet weight, this part (200) having an overall volume, and a mass which is less than the one it would have if its overall volume was totally occupied by the magnet.

Abstract: The invention relates to a magnetic actuating device containing a reference element and an adjusting element which is movably disposed between first and second end positions with respect to the reference element. The reference and/or adjusting elements contain a magnetizable material. A drive coil is provided for generating a magnetic field that moves the adjusting element from the first to the second end position. A mechanical clamping device is provided for producing mechanical forces that move the adjusting element from the second to the first end position. A fixing device is provided with a permanent magnet for generating a holding force fixing the adjusting element in the second end position with respect to the reference element. The fixing device contains a fixing unit separated from the adjusting element and provided with the permanent magnet.

Abstract: The present invention provides the actuator, which is capable of preventing biased abrasion by lowering a surface pressure at a contact portion of a movable element with a guide surface and increasing a movable range, in which a specified output force can be gained. Magnetic resistance of at least one of the surfaces (Y1, Y2) of first and second yoke parts (5, 6) corresponding to peripheral surfaces (P1, P2) of a plunger (7), on which magnetic flux acting surfaces are formed by energization, is unbalanced in the circumferential direction so as to act a resultant force of magnetic forces acting on the movable element in the radial direction eccentrically to a radial one end (E1) side.

Abstract: A relay includes a movable iron piece, a plate spring fixed to the one surface of the movable iron piece, a shaft hole formed by the one surface of the movable iron piece and the plate spring, and a supporting shaft inserted through the shaft hole. The movable iron piece is rotated round the supporting shaft based on excitation and nonexcitation of a magnetic unit. Both end portions of the plate spring alternately drive a contact point unit. The shaft hole is formed by a flat portion of the one surface of the movable iron piece and a bearing portion formed by subjecting the plate spring to bending work. The movable iron piece is supported so as to be rotatable.

Abstract: A highly efficient electromagnetic actuator which can reduce leakage of the magnetic flux is provided. The electromagnetic actuator comprises a first coil 31, a movable body 2 adapted to move on the central axis of the first coil 31, a first stator 11 covering the top face, bottom face and outer peripheral face of the first coil 31, and a permanent magnet 15 adapted to firmly latch the movable body 2 at one end point of its movable range. A second stator 12 adapted to control the magnetic flux generated from the permanent magnet 15 is provided in succession with the first stator 11. By providing the second stator 12, when releasing the movable body 2 from its firmly latched state, the permanent magnet 15 is not inversely excited or demagnetized.

Abstract: A variable force solenoid is described, wherein the solenoid has a relatively long stroke and a relatively low profile. The solenoid includes an armature with at least one tapered surface and a pole piece with at least one tapered surface. The armature and the pole piece may each be provided with multiple tapers on more than one surface thereof.

Abstract: A method for coupling a valve member to an armature member includes coupling the valve member to a surface of a bore of the armature member. The valve member contacts the armature member over less than an entire axial thickness of the surface of the bore of the armature member. The method further includes aligning the armature member to a desired alignment and securing the valve member to the armature member at the desired alignment.

Abstract: The invention refers to a solenoid, in particular for switching pressure controllers or pressure valves, comprising an armature movable in an armature space, and a coil which can be impinged by current, wherein this, when impinged by current, generates a magnetic field serving for moving the armature, and the armature space can be filled with oil, and wherein for deairing the armature space at least one deairing channel is provided. The invention is characterised in that in the deairing channel at least one backflow-preventing element is provided which is permeable in the direction of deairing.

Abstract: Embodiments of the present invention provide solenoid plungers, solenoid actuators, and solenoid-actuated mechanisms, that provide for an adjustable stroke, adjustable rated force, and adjustable plunger extension that overcome the problems and issues associated with non-adjustable solenoid actuators. In accordance with an embodiment of the present invention, an adjustable solenoid plunger is provided that comprises a stem and an armature including an axial armature bore. The stem engages the armature bore and is adapted for advancement of the armature along at least a portion of the stem.

Abstract: A variable force solenoid is described, wherein the solenoid has a relatively long stroke and a relatively low profile. The solenoid includes an armature with at least one tapered surface and a pole piece with at least one tapered surface. The armature and the pole piece may each be provided with multiple tapers on more than one surface thereof.

Abstract: An optical switch using Risley prisms and rotary microactuators to independently rotate the wedge prisms of each Risley prism pair is disclosed. The optical switch comprises an array of input Risley prism pairs that selectively redirect light beams from a plurality of input ports to an array of output Risley prism pairs that similarly direct the light beams to a plurality of output ports. Each wedge prism of each Risley prism pair can be independently rotated by a variable-reluctance stepping rotary microactuator that is fabricated by a multi-layer LIGA process. Each wedge prism can be formed integral to the annular rotor of the rotary microactuator by a DXRL process.

Abstract: An apparatus for use in components such as servo-valves, regulators and injectors for stabilizing system oscillations. The apparatus includes an armature having at least one groove formed on an exterior surface thereof; a sleeve, the armature being movably disposed in the sleeve; and a spring member disposed in the at least one groove in the armature and in sliding contact with the sleeve wherein the spring member exerts a radially outwardly directed spring force against the sleeve. A method of stabilizing an electromagnetically operated actuator comprises providing an armature having at least one groove formed on an exterior surface thereof; providing a sleeve wherein the armature is movably disposed in the sleeve; and disposing a spring member in the at least one groove in the armature and in sliding contact with the sleeve whereby the spring member exerts a radially outwardly directed spring force against the sleeve.

Abstract: A circuit breaker system has been provided for the controlled interruption of at least one circuit, with a mechanical breaker element and an adjustment device coupled to the breaker element, so that the mechanical breaker element can be placed in at least a first, second, and third position in order to selectively break or let pass neighboring circuits in the first, second, or third position. The breaker element is rotatably secured in a fastening device, connected with one foot. The interruption conditions are provided by a magnetic coil, which exerts power by way of a magnetic field on a permanent magnet, which is secured to the breaker element. In the simplest case the circuit breaker system has three conditions at its disposal, by which one of two circuits can be broken. When the coil is without power, one circuit is broken. The other circuit is broken by reversing the circuit direction.

Abstract: A circuit breaker includes a housing, separable contacts disposed in the housing, a latchable operating mechanism structured to separate the separable contacts, and a magnetic trip mechanism coupled to the latchable operating mechanism. The magnetic trip mechanism includes a plunger assembly support structure and a plunger assembly having a moveable core. The plunger assembly support structure includes a wall having a slot therein. The moveable core rests in the slot. A positioning member has a hook and an opening. The hook engages the wall of the plunger assembly support structure. The moveable core passes through the opening of the positioning member, which retains the moveable core relative to the plunger assembly support structure.

Abstract: The actuator device includes a rotation body and a rotation restriction plate. The rotation axis of the rotation body is placed on the rotation axis holding member. The rotation restriction plate is placed on the side opposite the rotation axis holding member with respect to the rotation axis of the rotation body. As a result, when the drive means is operated to move the rotation body thereby causing the abutment of the rotation body and the rotation restriction plate, the rotation axis of the rotation body is always subjected to a force which presses it against the rotation axis holding member, and there is no force which urges the rotation body to be floated up from the rotation axis holding member.

Abstract: The magnet system is part of a relay, which displays particularly low-noise switching. Components of the magnet system include a core unit (1), an armature (6) and a not represented coil, whereby the armature (6) is preloaded in an open position. The low-noise switching behavior is achieved in that the armature (6) is designed in such a manner that the armature pole face in the region of its front end (8a) in the closing direction is essentially perpendicular to a connecting line (16) towards the bearing edge (12). In addition, when the armature (6) is attracted, the core pole face (9) extends at least substantially parallel to the armature pole face (8). The arrangement according to the invention requires no additional parts for the purpose of noise reduction, resulting in a particularly simple and compact structure.

Abstract: A solenoid for an electromagnetic valve is provided with a bobbin on which a coil has been wound, a movable iron core fitted into an iron core hole of the bobbin and a fixed magnetic pole member attracting the movable iron core, the movable iron core has a main body portion with an even section fitted into the iron core hole, and a flange portion with an even section formed on a portion extending from the iron core hole of the main body distal end, and the ring has a first portion which is positioned on a distal end side and which has a large diameter hole in which the flange portion is fitted and a second portion which is positioned on a proximal end side and which has a small diameter hole in which the main body portion is fitted.

Abstract: An electromagnetic actuator, especially for the closure member of a valve, contains a solenoid unit, which has a cylindrical cavity closed at one end and open at the other end. An axially introduced guide tube for a magnetically movable armature is arrestable in the cavity by means of a securing device engageable in a first recess under spring force. To simplify connection of the actuator with and separation of the actuator from the component to be adjusted, provision is made for the securing device to lie completely within the solenoid unit and to snap automatically into the first recess when the guide tube is moved into a desired position in the cavity of the solenoid unit.

Abstract: DC electromagnet comprising a magnetic circuit equipped with a yoke and a magnetic core fixed at its ends with vanes and capable of axial displacement. The magnetic core 21 is smooth and the vanes 22,23 are shrink fitted and fixed to the ends of the smooth core. One of the vanes 22 is fixed to the core in a reference position and is then put into contact with the associated flange 25 of yoke 14, and the other vane 23 is shrink fitted and pushed into an adjustable position determined by bringing the yoke 14 into contact with the other flange 26.

Abstract: A stepping motor is provided, which includes: exciting coils; a rotor provided with a plurality of N/S poles so as to rotate following a change of an excitation state of the exciting coils; and a detecting coil provided separately from the exciting coils so as to generate induction voltage according to rotation of the rotor.

Abstract: A micromechanical switch having a plurality of stable positions, which can be driven between the stable positions with a minimum of residual oscillation. The low oscillation results from the application of a braking force of specific magnitude and duration to exactly cancel the excess energy imparted to the switch during actuation. The braking algorithm results in a faster settling time, thereby improving the performance of the switch.

Abstract: A control switch assembly includes a variable and selectively activatable feedback unit. The feedback unit provides tactile feedback to a user of the system depending upon a particular adjustment to be made by manipulating the control switch. In the preferred embodiment, the feedback unit includes an electromagnetic arrangement that is selectively energized to provide tactile feedback under preselected conditions.

Abstract: An electromagnetic relay has an iron core, an armature, a coil wound around the iron core, a yoke, a hinge spring, and a joining structure. The yoke is fastened rigidly to the iron core and has an engaging hole and a fitting portion. The hinge spring is used to support the armature rotatably on the yoke, and the joining structure is used to join the hinge spring to the yoke in the electromagnetic relay. The hinge spring has a tongue and a dish-shaped portion, and the yoke has an engaging hole and a fitting portion for engaging with the tongue and the dish-shaped portion. The hinge spring is joined to the yoke by inserting and fitting the hinge spring into the yoke. This structure serves to simplify the process of assembling the hinge spring to the yoke and drastically reduce the number of assembling steps required.

Abstract: Electromagnetic actuator including a mobile magnetic member made up of stacked ferromagnetic plates and two fixed electromagnets for reciprocating the mobile magnetic member along a central axis. The ferromagnetic plates each have two opposite edges parallel to the central axis which are crimped to two rigid transverse strips. Elastomer bodies join each transverse strip to a fixed spacer.

Abstract: The invention relates to an electromagnet, comprising a coil (30) which can be supplied with current and which thus generates a magnetic field and moves an armature (11) when supplied with current, and wherein the armature (11) serves for controlling a valve or another element. In order to improve the running properties of the armature (11), it is proposed that the armature (11) runs on a plastics sliding surface (2), in particular a sliding film (20) made of plastic.

Abstract: The invention relates to a solenoid valve with a coil body, a magnet core, an armature with armature guide and a yoke. In a first variant there is provided between the yoke and the armature guide a pole tube which has first means for producing an electrical contact with the armature guide and second means for producing an electrical contact with the yoke. In a second variant the solenoid valve also has a fixing plate which is disposed on the side of the solenoid valve on which the armature guide projects out of the yoke, the armature guide projecting through the fixing plate. According to the invention, in this variant a contacting element which produces an electrical contact between the fixing plate and the armature guide is provided between the fixing plate and the armature guide.

Abstract: A switching device is provided which includes a magnet system having a yoke which is elastically mounted by means of a volute spring. The volute spring permits the yoke to be displaced as far as closure of the magnet system. As a result, it is possible to prevent current overloading of the magnet system coil in the case of a welded break contact of the switching device.

Abstract: A switching device providing highly-reliable, frictionless, adjustment-free operation is described. Comprised of a comparatively small number of moving parts, the various aspects of the invention offer compact, cost-effective, reliable alternatives to their complex electromagnetic and costly solid-state counterparts. The main parts of the invention rely upon the principles of magnetic attraction and repulsion for the switching of a plurality of electrical contacts contained within the switching device. The flexibility inherent in the design of the invention permits the switching device to be configured in a variety of aspects, including the failsafe and latching designs described herein.

Abstract: An electromagnetic actuator for an electromagnetically actuated valve is disclosed. The actuator includes an electromagnet and an armature, the armature having a normally biased initial spaced apart first position distal from the electromagnet when the electromagnet is off and a second fixed stop position in abutment with the electromagnet when the electromagnet is on. In addition, the actuator includes a resilient member adapted to bias the armature in the normally biased initial spaced apart first position, and a compliant member operably connected to the armature. The armature approaches the electromagnet when the electromagnet is on and compresses the compliant member until the armature reaches the fixed stop position.

Abstract: An armature-mounting arrangement for a hinged-armature relay includes a yoke (3), an armature (1) positioned at an end portion of the yoke, and an armature holding spring (2) which has at least one switching contact thereon and which is mechanically coupled to the armature. The armature holding spring is formed as one piece with a return spring (5) for the armature and also with spring hooks (4). Each of the spring hooks has a first portion (4a) lying substantially flat on an outer side of the armature and a second portion (4b) extending from the first portion about the armature and lying almost flat against an outer surface of the yoke. This armature-mounting arrangement is a particularly uncomplicated and cost effective structure and its operation is also not particularly sensitive to fabrication tolerances of the armature and the yoke.

Abstract: A armature needle valve assembly for a gasoline fuel injector comprises a needle for contacting and separating from a valve seat. An armature, movable in a first direction and a second direction, causes the needle to contact and separate from the valve seat. A molded plastic connecting means secures the armature to the needle.

Abstract: A solenoid having an armature movable with respect to a stator from a rest position to an energized position when a coil is energized. Two return devices, for instance helical compression springs, urge the armature to return to the rest position. Two slidable sleeves are provided between stator and the armature. Ingress of dirt into the armature may jam either sleeve with respect to the stator or the armature without jamming the solenoid, since the other return devices/sleeve combination will still permit movement of the armature.

Abstract: A solenoid has a coil energizable to displace an armature in one direction and a spring urging return of the armature in the other direction to a rest position in which an end of the armature engages a stop. The end of the armature has a conical projection machined thereon which projects from the end thereof. The stop is a resilient grommet having conical bore therein so that the rest position of the armature is defined by the spring urging the armature to the rest position with the conical projection of the armature resting in the conical bore of the stop to thereby provide noise-free and rattle-free positioning of the armature at the rest position.